Driving mechanism for wool card strippers



E. CLARK DRIVING MECHANISM FOR WOOL CARD STRIPPERS Filed Dec. 10, 1937 3 Sheets-Sheet l INVENTOR BY 7! 77A ATTORNEY E. CLARK DRIVING MECHANISM FOR WOOL CARD STRIPPERS June 25, 1940.

Filed Dec. 10, 1937 3 Sheets-Sheet 2 INVENTOR W mi mwN

ATTORNEY K R A L C E DRIVING MECHANISM FOR WOOL CARD STRIPPERS Filed Dec. 10, 1937 I5 Sheets-Sheet 3 INVENTOR 0 3A 7% M ATTORNEY Patented June 25, 1940 2 UNITED STATES DRIVING MECHANISM FOR WOOL CARD STRIPPERS Ernest Clark, Brockton, Mass. Application December 10, 1937, Serial No. 179,035

6 Claims.

This invention relates to card stripping mechanisms of the general character disclosed in my earlier Patent No. 1,975,741. 7 While the mechanism there disclosed has proved very satisfactory and represents a substantial advance in the card stripping art, the present invention aims further to develop and perfect said mechanism with a view more especially to improving its operation, reducing wear,- 101 and minimizing the liability of failure.

The nature of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particularly II. pointed out in the appended claims.

In the drawings,

Figure 1 is a side elevation of a portion of a wool card equipped with a stripping apparatus embodying features of this invention;

Fig. 2 is an end view of the driving means for the stripper; 1

Fig. 3 is a vertical, central, sectional view through a portion of the mechanism shown in Fig. 2;

a Fig. 4 is a plan view, with parts broken away, of the supporting and driving means for the stripper head; and

Fig. 5 is a side view, somewhat diagrammatic in character, of this supporting and driving mechanism.

Referring first to Figs. 1, 4 and 5, the cylinder of a wool card is shown at 2 and the workers at 3'. The stripper is of the suction or vacuum type and comprises a stripper head, indicated in general at 4 in Figs. 4 and 5, this head carrying a stripper nozzle 5, the lower end of which runs closely adjacent to the surface of the card clothing on the cylinder. A hose 5, leading from a vacuum'pump or other suitable which is connected to the head 4 to drive it.

So far as the mechanism above described is concerned, it may be made exactly in accordance with the disclosure in my earlier patent, above l designated, and reference should be made to the air exhausting means, is connected with thisv for receiving and operating a pawl or traveler specification and drawings of that patent for a more detailed disclosure of this construction.

Due to the fact that in the prior organization thereversely'threaded shaft carries the driving pulley and is relatively long, extending from one side of the machine to the other, and also is mounted in such a manner as to counteract the natural tendency to sag, the tension of the belt that drives the pulley tends tovspring the shaft. This has the effect of interfering with the movements of the traveler, greatly increases the rate of wear of this part and imposes added friction on the traversing movements of the stripper head. The present invention deals particularly with these considerations and aims to devise a sup-v porting and driving mechanism for said head in which these difficulties will be avoided.

Referring to Figs. 2 to 5, inclusive, it will be observed that bracket heads 13 and M, respectively, are rigidly secured to the respective brackets 9 and i0, and, for functional purposes, form parts of these brackets. The ends of the two guide tubes or bars 1 and B are secured in these bracket heads, preferably in the manner disclosed inmy earlier patent above referred to. According to thev present invention, the bracket member I4 is drilled axially to receive a shaft l5 which is secured to it in a stationary position by any convenient means, such as the set screw 5, Fig. 3. Mounted on the outer end of this shaft is a pulley H which is provided with a hub IS on which gear teeth are cut so that this member forms, in effect, a driving pinion. Thev reversely threaded shaft I2 is extended through its bearing and has a gear secured fast thereon in mesh with the pinion l8. Preferably the web of the pulley is located at one end thereof so as to provide a chamber Within the pulley to receive and house the gears I8 and 20. Also, by mounting a shield or guard 2! on the cylindrical extension is of the bracket I4 where it will close the open end of the chamber in the pulley, the gearing is effectually resisted by the shaft l5 and the nature of its connections With the supporting bracket 50. The only strain applied to theshaft I2 is that necessary to produce its rotary motion.

Thus, with this relatively simple arrangement, the operating difiiculties sometimes encountered in connection with the earlier form of this stripping mechanism may be completely avoided. In fact, this has been found to be the case in actual operation.

While I have herein shown and described a preferred embodiment of my invention, it will be understood that the invention may take other forms without departing from the spirit or scope thereof.

Having thus described my invention, what I desire to claim as new is:

1. In a vacuum stripping mechanism for roll cards, the combination with a stripper head, a stripper nozzle carried by said head, and means supporting said head for traversing movement across the machine, of driving means for said head comprising a shaft, a pulley on said shaft, a pinion revolving with said pulley and driven thereby, a second shaft connected with said head to reciprocate it, a gear mounted on said second shaft for driving it and meshing with said pinion to be driven thereby, and means supporting said shafts in operative relationship to each other and to the supporting means for said head.

2. In a vacuum stripping mechanism for roll cards, the combination with a stripper head, a stripper nozzle carried by said head, and means supporting said head for traversing movement across the machine, said means including a bracket secured to one side of the machine, of driving means for said head comprising a shaft supported by said bracket, a pulley on said shaft, a pinion revolving with said pulley and driven thereby, a second shaft supported in said bracket and connected with said head to reciprocate it,.

and a gear mounted on said second shaft for driving it and meshing with said pinion to be driven thereby.

3. In a vacuum stripping mechanism for roll cards, the combination with a stripper head, a stripper nozzle carried by said head, and means supporting said head for traversing movement across the machine, of driving means for said head comprising a reversely threaded shaft, a traveller driven by said threaded shaft and operatively associated with said head to produce a traversing movement of the latter, a gear on the end of said shaft for driving it, a pinion meshing with said gear, a pulley revolving with said pinion, and means supporting said parts in cooperative relationship to each other.

4. In a vacuumstripping mechanism for roll cards, the combination of a stripper head, a stripper nozzle carried by said head, two guide bars on which said head is mounted for traversing movement across the machine, means including a bracket secured to one side of the machine for supporting said bars, and driving means for said head comprising a reversely threaded shaft supported at one end by said bracket, a traveler driven by said threaded shaft and operatively as sociated with said head to produce a traversing movement of the latter, a gear on the end of said shaft for driving it, a pulley supported by said bracket to revolve around an axis located between the center lines of said guide bars, and a pinion revolving with said pulley and meshing with said gear to drive it.

5. In a machine according to preceding claim 3, a construction in which a shield encircling the shaft of said pulley cooperates with the pulley to enclose said gears.

6. In a machine according to preceding claim 2, a construction in which a bushing removably supported in said bracket supports said shaft on which the pulley revolves.

ERNEST CLARK. 

